Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/13715
Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.contributor.authorPapanastasiou, Malvina-
dc.contributor.authorAllen, Norman S.-
dc.contributor.authorMcMahon, Adam-
dc.contributor.authorNaegel, Ludwig C.A.-
dc.contributor.authorEdge, Michele-
dc.contributor.authorProtopappas, Stavros-
dc.description.abstractAtmospheric Pressure Photoionization (APPI) in Mass Spectrometry (MS) has been utilized for a lumber of indigo-related compounds and was found to exhibit an excellent response. All structures were ionizad in negative ion mode yielding almost exclusively deprotonated molecules. Their product ion mass spectra were also recorded and showed characteristic losses mainly of small neutrals such as CO, HBr and CONH2. APPI-MS was applied further to the analysis of indigo dyestuffs of historical importance. HPLC with single ion monitoring (SIM) was employed for the separation and detection of the compounds. A simple HPLC gradient that separated the components in less than 10 min was developed. MS/MS spectra of the colouring components were also recorded and compared to that of the referente substances. The composition of Tyrian purple originating from Murex trunculus (Hexaplex trunculus), was by far the most complex, whereas some of the structures were also detected in Purpura haemastoma (Stramonita haemastoma) and Plicopurpura pansa (Plicopurpura patula subs. pansa). Further, a number of synthetic indigo dyes, produced at different times of the 19thcentury by different manufacturers, were analyzed; similar spectra were obtained suggesting that these were highly pure. Overall, the developed analytical procedure was very efficient offering high sensitivity and selectivity. APPI was proved suitable for ionizing the species under investigation producing clear mass spectra with characteristic fragment ions and may be used successfully in the future for the characterization of similar structures in historical art objects.es
dc.description.sponsorshipInstituto Politécnico Nacional (IPN). Centro Interdisciplinario de Ciencias Marinases
dc.publisherDyes and Pigmentses
dc.subjectTyrian purplees
dc.subjectAtmospheric pressure photoionizationes
dc.subjectIndigo dyes, Mass spectrometryes
dc.titleAnalysis of indigo-type compounds in natural dyes by negative ion atmospheric pressure photoionization mass spectrometryes
dc.description.especialidadCiencias marinases
Aparece en las colecciones: Artículos

Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Papanastasiou_Malvina_2012_Dyes_and_Pigments_3886.pdf55.24 kBAdobe PDFVisualizar/Abrir

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.